Question

3次根号下2加根5与3次根号下2减根5 的和 怎么计算?

Answer 1

2^(1/3) + 5^(1/2) + 2^(1/3) - 5^(1/2)

= 2^(1/3) + 5^(1/2) + 2^(1/3) - 5^(1/2)

= 2 × 2^(1/3)

= 2 × 1.26

= 2.52